Long’s Peak framed by rock outcrop, Rocky Mountain National Park, Colorado.
Scientists have long thought most nitrogen in Earth’s ecosystems comes from the air, but new research shows it also is released as rocks weather. This could boost plant growth and help sequester carbon – but not fast enough to avert climate change, as some pundits have claimed.
Multiple reports have convincingly demonstrated that agroecology is the most promising pathway to sustainable food systems on all continents. But governments aren’t doing enough to support it.
Pollution has increased carbon in our soils - which is good for climate change. But this carbon may not stay there for long.
Our food system depends on nitrogen fertilisers.
Nitrogen image from www.shutterstock.com
Somehow we need to grow more food to feed an expanding population while minimising the problems associated with nitrogen fertiliser use.
How to trim agriculture’s global warming footprint?
About 10% of human-generated greenhouse gas emissions come from farming. Researchers are working on ways to address this piece of the global warming puzzle.